On new dynamic channel assignment schemes and their efficient evaluation through a generic simulation system for large scale cellular telecommunications

The rapid evolution of cellular technology and the augmentative user demand for advanced mobile services leads the industry to develop more efficient network structures. The increasing number of cellular users and the demand for broadband mobile communications (3 and 4 generation) drives to the research of new methodologies for the design of cellular networks and services. Simulation environments more than ever offer the opportunity to develop and study with low cost new structures and methods for the implementation of new services. This paper thoroughly reviews centralized and distributed Dynamic Channel Assignment (DCA) schemes in terms of simulation characteristics and needs and proposes a comprehensive simulation system for evaluating them, which incorporates their principles, entities and concepts involved. The main goal, however, is to present three new DCA variations and prove through experimental evaluation using the proposed simulation system that the suggested schemes outperform traditional DCA schemes. The proposed simulation system is implemented in Java, in order to create a high performance generic simulation environment with the future capability of internetworking. The system is designed with the goal to be efficient in simulating large scale generic cellular telecommunication systems and the associated DCA schemes. Moreover, another goal of the proposed system is to serve as a test bed for the evaluation and development of DCA schemes (especially for educational purposes) involved in such large scale cellular systems towards their planning as effective cellular mobile radio networks.